Excavator.



No. 727,656. I PATENTED MAY 12, 1903.

W. E. l: P. J. MALONEY. n

EXGAVATOR.

APPLIUATIOE EILEE SEPT. 5, 1901.

No MODEL. v s SHEETS-SHEET 1.

VNo. 727,656. Q PATENTE) MAY 12, 190s.

' W. E. &P.- J. MALONEY.

BXGAVATOR.

APPLIQATIONTILED SEPT. 5, 1901. N0 MODEL, S-SHEET 2.

No. 727,656."l 'PATBNTBD MAY 12, 19034.*

W. E. a: PIJ. MALONBY.

. BXGAVATOR.

APPLICATION FILED SBVPL, 1:901. v N0 MODEL. A 3 SHEETS-SHEET 3.

d .NTED y STATES 'ratented Mey 12, 190e;

PAT-ENT OFFICE. I

WILLIAM E. MALONEY AND PETER J. MAL'ONEY, OF WORCESTER, MASSACHUSETTS. v

SPECIFICATION, forming part of Letters Patent No. 727,656, dated May 12, 1902i Aptncatan fuea september 5.1901.' serai no. 74,428. (Nt model.)

To all whom, it may concern,.-

Beit known that we, WILLIAM E. M ALON'EY, and PETER J. lVIALONEY,citiZe11s of the Unitedl. States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Excavator,of which the following is a specification.

This invention relates to an excavator or steam-shovel which has been V,especially de-l signed to be operated by an ordinary hoist;

ing-engine, such as commonly employed 4"in connection with an ordinaryderrick.

The especial objectsof this invention are to provide a strong, simple, efcient, and inexpensive construction in which but two ropes or. cables need to be operated by power, one-ropeV 'or cable being connected to a tackle forpullfl ing the bucket or shovel out along the. boom,`

the other rope or cable being connected to a lifting-tackle for the'bucket, and both of said ropes being utilized' to operate connections for tipping or swinging the bucket to force the same into the dirt or bankbeing exea-yI vated. u ,Y To these ends this invention consists of the excavator or steam-shovel `and of the combinations of parts therein, as hereinafter deiscribed, and more particularly pointed out in.

the claims at the end of this specification.V A

In the accompanying three sheets of drawings, Figure l isla side view of an excavator' or steam-sho vel constructed according to this invention. Fig. 2 is an enlarged view of the carriage and parts controlled therefrom, one ofthe rack-frames being omitted 'for clearness. Fig. 3 is a front view of the same partially in section. Fig. 4 is a detailed view,

partially broken away, illustrating the antifriction, bearings employed in connections mounted in the carriage; and Fig. 5 is a planw view illustrating the arrangement of. drums.

which are turned or driven by the hoistingropes. i

In nearly all classes of excavating, especially in excavating loose dirt and gravel, the work can be done with the greatest possible rapidity and eiiciency by the use of a steamshovel. In most situations, however, especially in connection with the excavation for ordinary building constructions, this fact is lA in the ordinary manner.

v`the expense of transporting and setting up a steam-shovel on smaller excavating jobs usually rendering the use of a steam-shovel inexpedient.

Y .The especialv objectof our present invention is tojprovide an excavatorl or steamshovel which forms substantially an attachment for an ordinary derrickl construction and which willbeof such efficient and simple construction that it can be readily set up and rigged in condition for use and in which the parts are arranged so that they can be actuated-from an` ordinary hoisting-engine, the same cableswhich are employed for lifting and drawingout the bucket being also employed for tipping the bucket or shovel and for positively forcing the same into the dirt or gravel. To these ends we prefer to have both the hoisting-rope and the rope which draws the carriage out along the boom pass around drums 0r wheels which are normally free to turn, but either of which can be thrown into gear to operate the bucket tipping and forcing connections, although it is obvious -in practice that only one of these ropes may ber-employed Vfor this purpose, if desired.

j Referring to the accompanying drawings and in detail, an excavator or steam-shovel constructed according to* our invention, as herein illustrated, comprises an ordinary derrick fnastfor upright'A. Connected to the mast or uprightA in the ordinary manner is a boom or arm B. The boom or arm B can be set to different inclinations, according to the steepness of the bank or surface which is being excavated, by means of a rope R,- which passes through the blocks 10and may be fastened to a cleat on the rear side ofthe mast Mounted on the boom B and running on friction-rollers thereon is a carriage C. Housed in the carriage C, as hereinafter described, are suitable connections and gearing for operating a double rack -frame F, which is connected to the bucket or shovel G. Connected to the bail of the shovel or bucket Gr are suitable hoisting IOO connections, and connected to draw out the carriage C along the boom B is a second set ot' blocks or connections.

The bucket-hoisting connections and the carriage-operating connections are operated by the ropes Hand I, respectively, which may be wound up or operated from an ordinary hoisting-engine or other suitable source of power. As herein illustrated, the hoistingropes II and I pass under the foot of the derrick-mast A in the ordinary manner, the rope H being trained down over a pulley 11, under a pulley l2, around a normally loose drum 13, and thence through the blocks 14, so as to draw out the carriage C to the desired position, while permitting the carriage C to run back by gravity when slackened.

The rope l after passing up through the mast A, as illustrated in Fig. 5, may pass around a normally loose drum or wheel 15 and, as illustrated in Fig. 1, then passes through the blocks 16 for hoisting the bucket or shovel G or for permitting the same to be lowered when slackened. The connections for operating the bucket tipping and forcing mechanism are most clearly illustrated in the second and third sheets of the drawings, as shown in Fig. 5.

A frame 17 is secured near the lower end of the boom l, and journaled in the frame 17 is a shaft 18, which is connected by beveled gears to operate a shaft 19, which extends up along the under side ot' the boom B. The drums or wheels 13 and 15, around which parts the ropes H and I, as before described, are loosely mounted on the shaft 18, and the hubs of the drums or wheels 13 and 15 are provided with clutched mechanisms for connecting said drums or wheels to the shaft 18, when desired. Splined onto and longitudinally movable therein are operating-cones 2O and 21, which are connected together bya rod 22 and which can be shifted by the handle 23, pivotally connected by a lever 24 to the frame 17. By means of this construction, when the handle 23 is in its normal position, as shown in Fig. both wheels 13 and 15 will be free to revolve loosely. When the handle 23 is moved in one direction, the cone 20 will operate the friction-clutch with the drum or wheel 13 to connect the same with the shaft 1S, and when the handle 23 is moved from its normal position in the opposite direction the cone 2l will operates the friction-clutch of the drum or wheel 15 to connect that drum to the shaft 18.

The shaft 18 is provided at one end with a friction-disk 25, which can be controlled by a strap or brake-lever 2G. By means of this construction when either ot' the pulley-ropes H or I is being hauled in the drum around which the same is wrapped may be connected to turn the shaft 19, which extends up along the under side of the boom B, to operate the gearing mounted in the carriage C to tip or force the bucket or shovel into the ground being excavated, as desired.

scribed; but

The gearing which is contained in the carriage C is most clearly illustrated in Figs. 2 to 4, inclusive. As shown in Fig 2, abracket or bearing 27 extends down from the carriage C, and journaled in the bracket 27 is asleeve 2S, which carries a gear or pinion 29.Y The shaft 19 passes loosely through the sleeve 28, huthas a roller-bearing connection therewith, as illustrated in Fig. 4 and as hereinafter described. The gear or pinion 29 meshes With and drives a gear 30. Secured to and turning with the gear 30 is a beveled pinion 3l, which meshes With and drives a beveled gear 32, secured on the shaft 33. Mounted on the shaft 33 are the gears 34, which mesh with the racks 35 of the rack-frames F, before referred to. By means of this construction when the feedshaft 19 is turned, by means of the drums and friction-clutched mechanism before described, the rack-frames F will. be operated, as illustrated by the dotted linesin Fig. A1, to tip the bucket and force the same into the gravel to any desired extent, the roller-bearing connection cooperating with the feedshaft 19, so that the same may operate With the least possible amount of friction in order to prevent the carriage C from binding or cramping therein, so as to prevent the carriage C from running down the boom by gravity, as most clearly illustrated in Fig. 4. As shown in this figure, two sets of bearingpieces 36 are adjustahly threaded into the sleeve 27. Extending through each set of bearing-pieces 36 is a stud 37, having a checknnt 38 thereon for holding the bearing-pieces 36 in their adjusted position.

The feed-shaft 19, as illustrated, is preferably grooved or cut away, so that the same hassubstantiallyacross-shaped cross-section. Journaled in the bearing-pieces 36 on suitable bearing poles 40 are spools or wheels 49, which engage two of the opposite projections 41 of the feed-shaft 19, so as to transmit motion from the feed-shaft 19 to the sleeve 29, while at the same time permitting the sleeve 29 to shift longitudinally thereon with the least possible amount of friction.

We are aware that numerous changes may be made in the construction of our excavator orsteam-shovel by those who are skilled in the art without departing from the scope of our invention as expressed in the claims. We do not wish, therefore, to be limited to the construction we have herein shown and de- Vhat We do claim, and desire to secure by Letters Patent of the United States, is

1. Inan excavatororpowershovel,thecombination of a bucket-swinging carriage, a rope for operating the carriage, and bucket-tipping connections also operated by said rope.

2. In an excavator or power-shovel,the combination of a bucket-hoisting rope, a bucketswinging rope, and bucket-tipping connections arranged to be operated by either of said ropes.

3. In an excavator or poWer-shovel,the com- IOO IIO

bination of a boom or arm, a bucket, a hoisting-tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom for swinging the bucket, and gearing housed in the carriage for tipping the bucket. l

4. In an excavator or powershovel,the combination of a boom or arm, a bucket, a hoisting-tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom, a rack-frame connecting the carriage with the bucket, and gearing housed iny said carriage tor operating the rackframe to tip the bucket.

5. The combination of a boom or arm, a bucket, a hoisting tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom for swinging the bucket, gearing housed in the carriage for tipping the bucket, and the feed-shaft extending out along the boom for operating said gearing.

6. In an excavator or power-shovel,the combination of a boom or arm, a bucket, a hoisting-tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom,a rack-frame connecting the carriage with the bucket, gearing housed in said carriage for operating the rackframe to tip the bucket, and a feed-shaft extending out along the boom for operating said gearing.

7. In an excavator or power-shovel,the combination of a boom or arm, a bucket, a carriage longitudinally movable on the boom and connected to swing the bucket, a drum or wheel normally free to turn, a clutch forconnecting the drum with a bucket-tipping mechanism, and a carriage-operating rope passing around the drum.

8. In an excavator or powershovel,the combination of a boom or arm, a bucket, a hoisting-tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom for swinging the bucket, gearing housed in the carriage for tipping the bucket, a feed-shaft extending out along the boom for tipping said gearing, across-shaft geared to turn the feed shaft, two drums loosely mounted on the cross-shaft, the hoisting-rope passing around one of said drums, and a carriage-operating rope passing around the other of said drums, and a clutch mechanism for connecting either of said drums to turn the feed-shaft.

9. In an excavator or powershovel,the combination of a boom or arm, a bucket, a hoisting-tackle connecting the bucket with the end of the boom, a carriage longitudinally movable on the boom, ia rack-frame connecting the carriage with the bucket, gearing housed in the carriage for operating the rackframe, a feed-shaft extending out along the boom for operating the gearing, a cross-shaft geared to the feed-shaft, two drums or wheels loosely mounted on the'cross-shaft, the hoisting-rope passing around one of said drums, and the carriage operating rope passing around the other of said drums, and a clutch mechanism for connecting either of said drums to turn the feed-shaft.

10. In an excavator or power-shovel, the combination of a boom or arm, abucket, a hoisting-tackle connecting the bucket With the end of the boom, a carriage longitudinally movable on the boom for swinging the bucket, gearing housed inthe carriage for tipping the bucket, a feed-shaft extending out along the boom, and an antifriction connection between the feed-shaft and said gearing.

ll. In an excavator or power-shovel, the combination of an' inclined lboom or arm, a

bucket, a hoisting -tackle connecting the bucket with the endof the boom, a carriage mounted on the boom, an operating-tackle for drawing the carriage out along the boom, gearing housed in the carriage for tipping the bucket, a feed-shaft extending out along the boom, and an antifriction connection between the feed-shaft and said gearing, arranged so as not to interfere with ythe movement of the carriage down the inclined boom by gravity.

l2. In an excavator or power-shovel, the combination of an inclined boom, a carriage longitudinally movable on said boom, gearing housed in the carriage' for tipping the buckets, va feed-shaft substantially cross-shaped in section, and a sleeve mounted in the carriage and connected to operate the gearing therein, having friction-wheels engaging the feed-shaft.

1'3. In an excavator' or power-shovel, the

combination ot' a longitudinally-movable carriage, a feed-shaft, substantially cross-shaped in section, yand a sleeve mounted on the feedshaft and connected to turn the gearing in the carriage, having an antitriction connecvIOO tion with the feed-shaft, comprising spoolshaped bearing-rolls engaging a feed-shaft and mounted on adjustableball-bearings, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

WILLIAM E. MALONEY. PETER J. MALONEY.

Witnesses:

LoUIs W. SOUTHGATE, PHILIP W. SOUTHGATE.

'Ito 

